Consider an array-based queue with 'front' at index 3 and 'rear' at index 7. After two dequeue operations, what will be the new value of 'front'?
2
1
6
5
What data structure is used to implement a priority queue?
Heap
Linked List
Array
Stack
If a queue is implemented using a fixed-size array, what condition leads to a 'queue overflow' situation?
Trying to remove an element from an empty queue.
Trying to access an element beyond the queue's capacity.
Trying to add an element to a full queue.
Trying to sort the elements in the queue.
What is the primary characteristic that distinguishes a queue from other linear data structures?
It allows for random access of elements.
Elements are added and removed from the same end.
Elements are added at one end and removed from the other.
It is a sorted data structure.
What is the worst-case time complexity of searching for an element in a queue implemented using a linked list?
O(n log n)
O(log n)
O(1)
O(n)
How do you efficiently handle the situation where the array representing the queue becomes full?
Delete the oldest element.
Use a linked list instead of an array.
Stop accepting new elements.
Resize the array to accommodate more elements.
What is the time complexity of enqueue and dequeue operations in a well-implemented array-based queue?
O(n), where n is the number of elements in the queue.
It depends on the size of the array.
If you were to design a system to handle customer service requests arriving through various channels, with each request needing to be addressed in the order it was received, which data structure would be most appropriate?
Binary Search Tree
Queue
Graph
In a queue data structure, what does the 'enqueue' operation perform?
Adds an element to the rear of the queue.
Adds an element to the front of the queue.
Checks if the queue is empty.
Removes and returns the element at the front of the queue.
In an array-based queue implementation, what happens when you dequeue from an empty queue?
The first element is removed.
The queue remains unchanged.
An underflow condition occurs.
The last element is removed.